Summary
Relative
to the Modified Jackson-Hunt theory:
•Lateral
flow increases spacing for Sn-Pb, Al-In (augments diffusion)
•Lateral
flow decreases spacing for Fe-C (opposes diffusion)
Predicted
spacings are still too small for monotectics
Current Work
Linear
stability of a planar fluid-fluid phase boundary
in
directional solidification (monotectic L1 – L2 transition)
Account
for bouyancy, density change, Marangoni flow
• Laplace-Young
equation
•Gibbs-Thomson equation
•Classius-Clapyron equation